No, these are not made of real sea glass.  Glass Paradox, a Maine Company, made this design and color for Indigo Blues.  Each glass is hand-painted to resemble pieces of ocean-washed sea glass, found while strolling on the beach, then rearranged in a lovely mosaic. 

How can you not think of Bar Harbor when you see the colors of the sky, the ocean, the surf, and even the fog represented in each piece?